123043901 has 4 divisors (see below), whose sum is σ = 124193952. Its totient is φ = 121893852.

The previous prime is 123043891. The next prime is 123043913. The reversal of 123043901 is 109340321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 109340321 = 23 ⋅4753927.

It is a cyclic number.

It is not a de Polignac number, because 123043901 - 2²² = 118849597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123043961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 574865 + ... + 575078.

It is an arithmetic number, because the mean of its divisors is an integer number (31048488).

Almost surely, 2^123043901 is an apocalyptic number.

It is an amenable number.

123043901 is a deficient number, since it is larger than the sum of its proper divisors (1150051).

123043901 is a wasteful number, since it uses less digits than its factorization.

123043901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1150050.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 123043901 is about 11092.5155397682. The cubic root of 123043901 is about 497.3781437705.

The spelling of 123043901 in words is "one hundred twenty-three million, forty-three thousand, nine hundred one".